I'm trying to convert from Asterisk to Freeswitch, and have a question about spans. I read the freetdm configuration example for TDM400 and am wondering what exactly is a span. I have 2 TDM400P cards in my computer, one card has 2 FXS modules for connecting analog phones. The other card has 3 FXO modules for connecting to 3 PSTN trunk lines. # lsdahdi ### Span 1: WCTDM/4 "Wildcard TDM400P REV I Board 5" 1 FXS FXOKS (In use) (EC: OSLEC - INACTIVE) 2 FXS FXOKS (In use) (EC: OSLEC - INACTIVE) 3 unknown Reserved 4 unknown Reserved ### Span 2: WCTDM/4 "Wildcard TDM400P REV I Board 5" (MASTER) 5 FXO FXSKS (In use) (EC: OSLEC - INACTIVE) 6 FXO FXSKS (In use) (EC: OSLEC - INACTIVE) 7 FXO FXSKS (In use) (EC: OSLEC - INACTIVE) 8 unknown Reserved Do I configure freetdm as in the example for TDM400 with separate spans for each module like the following? or should I have just two spans as shown by lsdahsi? Thanks. #cat freetdm.conf [general] cpu_monitor => yes cpu_monitoring_interval => 2000 ; monitor usage every 2 seconds cpu_set_alarm_threshold => 90 ; whenever 90% of global CPU usage is reached, trigger the alarm. cpu_reset_alarm_threshold => 80 ; when the CPU usage decreases at 80%, clear the alarm. cpu_alarm_action => reject,warn ; Start rejecting calls when the CPU alarm is triggered and also print warnings. ; ANALOG PHONES [span zt FXS1] fxs-channel => 1 analog-start-type => kewl ;txgain => ;rxgain => ;number => [span zt FXS2] fxs-channel => 2 analog-start-type => kewl ;txgain => ;rxgain => ;number => ; PSTN TRUNK LINES [span zt FXO5] trunk-type => FXO fxo-channel => 5 analog-start-type => kewl ;txgain => ;rxgain => ;number => [span zt FXO6] trunk-type => FXO fxo-channel => 6 analog-start-type => kewl ;txgain => ;rxgain => ;number => [span zt FXO7] trunk-type => FXO fxo-channel => 7 analog-start-type => kewl ;txgain => ;rxgain => ;number =>